446 TEE CRUISE OF THE ' GUBAQOA: 



PLATE XL. Figs. 8, 9. 



HELIX LAQUEATA, Baird. 



Shell small, depressly orbicular, thin, pellucid, shining, smooth, 

 flattened underneath, imperforate, with a slight umbilical pit; 

 whorls 4:^, rather flattened above, fluted and carinated, the 

 fluting very conspicuous on the last two whorls ; sutures distinct ; 

 aperture lunat /; labrum simple, sharp ; columella with a white 

 callus within. 



Breadth 2i lines. 

 Height li lines. 

 Hab. Samoan group. 



PLATE XL. Figs. 10, II. 



HELIX VAVAUENSIS, Baird. 



Shell small, orbicular, rather depressed, thin, pellucid, shining, 

 of a homy colour, quite smooth, rounded underneath, imperforate, 

 with a slight umbilical pit; spire of 4 J whorls, last rounded, 

 convex; suture marginated; aperture lunate; labrum thin, sharp; 

 columella margin white, thickened, with a slight wliite callus at 

 its junction with the body of the shell. 



Breadth 3 lines. 



Height 2 lines. 



Hab. Vavau, Friendly Islands. 



